Leica Microsystems (schweiz) Ag

Leica Mikroskopie Systeme Ag

Leica Instruments (singapore) Pte. Ltd.

Leica Microsystems Ag

Leica Geosystems Ag

Leica Heerbrugg Ag

Klaus-Peter Zimmer

Bernhard Braunecker

Roger Spink

John Rice Rogers

Ruedi Rottermann

Harald Schnitzler

Thomas Mayer

Heinz Suhner

Heinz Zimmermann

Otto Geschwentner

Juergen Metz

Luitpold Schulz

Patrick Kopf

Klaus Hildebrand

A stereomicroscope of the Greenough type includes a first monocular microscope and a second monocular microscope, which define a first beam path and a second beam path, respectively, wherein the first and second microscopes are arranged at a convergence angle to one another and comprise magnification systems for producing equal magnifications which can be varied synchronously with one another. At least one optical element in the first microscope has a different optically effective diameter compared to at least one corresponding optical element in the second microscope.

Greenough-type stereomicroscope

A stereomicroscope of the telescope type includes a first beam path and a second beam path, wherein in the first beam path a first telescope system and in the second beam path a second telescope system are provided, wherein the magnifications of both telescope systems are equal and can be changed synchronously to each other, and wherein a common main objective is allocated to both beam paths. In order to increase the resolution without loss in depth of field, it is proposed that at least one optical element of the first telescope system has, compared to at least one corresponding optical element of the second telescope system, a different optically effective diameter.

Stereomicroscope

A stereomicroscope includes a first beam path and a second beam path, wherein in the first beam path a first telescope system is provided and in the second beam path a second telescope system is provided. An observation unit comprising a first and a second observation unit is also provided. At least one optical element of the first telescope system compared to at least one corresponding optical element of the second telescope system has a different optically effective diameter. Between the first telescope system and the second telescope system and the first and the second observation units a prism group is provided which can be moved in the beam path of the first telescope system with the larger diameter of the entrance pupil.

The invention relates to a transmitted-light base () for illuminating an object () for imaging through a zoom microscope (), the transmitted-light base () comprising an integrated light source () having an associated electrical power regulation system () for generating a suitable radiation flux, and means (), capable of being added downstream, for generating a specified spectral intensity distribution. To allow compensation for brightness changes of low dynamic range, such as those occurring in particular during zooming, a continuously controllable mechanical brightness regulator () is proposed which is activatable by means of an associated adjustment device () in such a way that the illumination intensity of the transmitted-light base () is controllable with no change in the spectral intensity distribution. The brightness regulator () is arranged close to the light exit side of a reflector lamp () used as the light source, or, when a lamp () and collector lens () are used as the light source, close to the collector lens ().

Transmitted-light base for a microscope, and method for regulating the illumination intensity of a transmitted-light base

A magnetically positioned precision holder for optical components in an optical device comprises a carrier for replaceably holding at least one optical component. The carrier is arranged in positionally adjustable fashion in a housing recess including a precision stop surface. Magnet pairs (A/Aand B/B) are oriented with identical polarity being provided in order to achieve a continuous contact pressure of the carrier () against the stop surface (), in such a way that the one magnet (A, B) is located in the recess and the corresponding magnet (A, B) is located in the carrier. The use of identically poled magnet pairs for movable precision holders and for precision positioning systems is also proposed.

Magnetically positioned precision holder for optical components

The invention relates to an afocal zoom ( ) for use in microscopes of high resolution and high zoom factors having a tube lens ( ), the zoom comprising four successive optical assemblies (G , G , G , G ) when viewed from the object end, the first assembly (G ) having a positive focal length (f ), the second assembly (G ) a negative focal length (f ), the third assembly (G ) a positive focal length (f ), and the fourth assembly (G ) a negative focal length (f ), and the first and the fourth assembly (G , G ) being arranged in stationary fashion and the second and the third assembly (G , G ) being arranged movably for modifying the magnification of the zoom ( ), the zoom magnification decreasing with increasing distance (D ) between the two assemblies (G , G ). The zoom operates in the range of &ldquo;useful magnification&rdquo; of the microscope with sufficient contrast if the zoom meets the meets specific conditions.

Afocal zoom for use in microscopes

The invention relates to an objective ( ) for stereomicroscopes of the telescope type which comprises three optical assemblies (G G G ), the first assembly (G ) being arranged towards the object side and the third assembly (G ) being arranged towards a magnification changer ( L, R). The proposed objective ( ) meets the conditions 0.44&lE;ENP/F&lE;0.6, where ENP denotes the diameter of the entry pupil of the magnification changer ( L, R) at the maximum magnification and F denotes the focal length of the objective ( ), and tan(w )&gE;0.16, where w denotes the maximum field angle of the objective ( ) at the lowest magnification of the magnification changer ( L, R). The proposed objective ( ) makes it possible to use a stereomicroscope with maximum resolution and a field of vision which is adapted to the full range of magnifications of the microscope.

Objective for stereomicroscopes of the telescope type

A stereomicroscope has a left and a right stereo radiation path and an adjusting device for selecting a stereo base. A main lens is arranged between an object to be observed and the adjusting device, which may be designed as an opto-mechanical switching device. The arrangement allows an integrated structure with low light losses.

An arrangement for determining the position of a surgical microscope uses signal transmitters and signal receivers. Light emitting diodes that emit coded light signals and light receptors for receiving the coded light signals are arranged in various locations in space. Reflectors having narrow-bond reflection characteristics are arranged on the microscope so that the light reflected can be identified.

Arrangement for determining the position of a surgical microscope

Method of determining measurement-point position data and device for

Method of determining the distance of a feature on an object from a

A microscope adapted for use by two or more operators during surgical operations has a main objective lens and at least two mutually independent stereoscopic observation beam paths. Each stereoscopic observation beam path has a magnification system and a focusing system disposed therein. Pupil displacement systems are provided in modular construction of different mechanical lengths but of equal optical path lengths. This modular construction allows individual and customized configurations of the microscope for adaptation to meet the needs and requirements of various operating conditions and the various operating disciplines.

Growing community of inventors

Heerbrugg, Switzerland

Klaus-Peter Zimmer